Elogen PEM Electrolysers

Elogen SAS is a French proton exchange membrane (PEM) electrolysis company with its registered address in Les Ulis, France, and presents itself as the French leader in PEM electrolysis. It serves mobility, power-to-gas, power-to-power and industry applications.

Its offering comprises containerised electrolysers, high power electrolysis systems and services and maintenance, built around the modular Modulyser design. On 12 December 2025 Elogen and Fores Engineering signed a cooperation agreement to supply hydrogen production systems in Southern and Western Europe, onshore and offshore; a 2.5 MW unit delivered for CrossWind's hub in the Netherlands was completed in July 2025.

• Containerised electrolysers: PEM systems delivered in container format.
• High power systems: larger electrolysis plants for industrial users.
• Modulyser design: modular electrolyser architecture.
• Services and maintenance: support offering for installed systems.
• Turnkey delivery: cooperation with Fores Engineering for integration, onshore and offshore.

Pilot green hydrogen units for industrial parks in Vietnam. Hydrogen supply for hydrogen mobility pilots. Power-to-gas demonstrations paired with solar or wind.

PEM technology suits variable renewable power and compact installations. Containerised units simplify transport and installation. A partner model with a balance-of-plant engineer enables turnkey units adapted to local constraints. Services and maintenance are offered alongside equipment.

PEM electrolysis is favored where renewable supply fluctuates and space is limited. Offshore wind and distributed hydrogen hubs are growing segments, and Vietnam's offshore wind ambitions could create similar opportunities in future.

ELOGEN SAS, 8 avenue du Parana, Les Ulis, France (from the cookie policy). Linked to GTT Group per the site menu. Partners named include Fores Engineering, Rockfin and RoyalStav with Veolia. Founding year not stated.